CA2252848A1 - Servo tracking system utilizing phase-sensitive detection of reflectance variations - Google Patents

Servo tracking system utilizing phase-sensitive detection of reflectance variations

Info

Publication number
CA2252848A1
CA2252848A1 CA002252848A CA2252848A CA2252848A1 CA 2252848 A1 CA2252848 A1 CA 2252848A1 CA 002252848 A CA002252848 A CA 002252848A CA 2252848 A CA2252848 A CA 2252848A CA 2252848 A1 CA2252848 A1 CA 2252848A1
Authority
CA
Canada
Prior art keywords
tracking
phase
controlling
tracking system
system utilizing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002252848A
Other languages
French (fr)
Other versions
CA2252848C (en
Inventor
R. Daniel Ferguson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Physical Sciences Corp
Original Assignee
Physical Sciences, Inc.
R. Daniel Ferguson
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Physical Sciences, Inc., R. Daniel Ferguson filed Critical Physical Sciences, Inc.
Publication of CA2252848A1 publication Critical patent/CA2252848A1/en
Application granted granted Critical
Publication of CA2252848C publication Critical patent/CA2252848C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/66—Tracking systems using electromagnetic waves other than radio waves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/113—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining or recording eye movement
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • A61F9/008—Methods or devices for eye surgery using laser
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00681—Aspects not otherwise provided for
    • A61B2017/00694—Aspects not otherwise provided for with means correcting for movement of or for synchronisation with the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • A61F9/008—Methods or devices for eye surgery using laser
    • A61F2009/00844—Feedback systems
    • A61F2009/00846—Eyetracking
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • A61F9/008—Methods or devices for eye surgery using laser
    • A61F2009/00861—Methods or devices for eye surgery using laser adapted for treatment at a particular location
    • A61F2009/00863—Retina
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • A61F9/008—Methods or devices for eye surgery using laser
    • A61F9/00821—Methods or devices for eye surgery using laser for coagulation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/86—Combinations of lidar systems with systems other than lidar, radar or sonar, e.g. with direction finders
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • G01S7/4811—Constructional features, e.g. arrangements of optical elements common to transmitter and receiver
    • G01S7/4812—Constructional features, e.g. arrangements of optical elements common to transmitter and receiver transmitted and received beams following a coaxial path

Abstract

Apparatus and methods for tracking a feature on a target surface and continually providing analog corrections to tracking mirrors in real time by utilizing a low-power incoherent tracking beam to detect the movements of a reference feature on the target and confocal reflectometry to monitor the reflection from the tracking beam's current position are described. The apparatus includes a dithering device for dithering the tracking beam in a first and a second direction with an oscillatory motion, a tracking device for controlling the position of a therapeutic beam relative to a target and for controlling the position of the tracking beam relative to a reference feature, a reflectometer for providing an output signal with a phase corresponding to a phase of the reflected tracking beam, and a signal processor for comparing the phase of the reflectometer output signal to the phases of the oscillatory motion and for controlling the tracking device so that the therapeutic beam to tracks relative to the reference feature.
CA002252848A 1996-04-23 1997-04-22 Servo tracking system utilizing phase-sensitive detection of reflectance variations Expired - Fee Related CA2252848C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/636,668 1996-04-23
US08/636,668 US5767941A (en) 1996-04-23 1996-04-23 Servo tracking system utilizing phase-sensitive detection of reflectance variations
PCT/US1997/006581 WO1997040405A1 (en) 1996-04-23 1997-04-22 Servo tracking system utilizing phase-sensitive detection of reflectance variations

Publications (2)

Publication Number Publication Date
CA2252848A1 true CA2252848A1 (en) 1997-10-30
CA2252848C CA2252848C (en) 2002-09-03

Family

ID=24552860

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002252848A Expired - Fee Related CA2252848C (en) 1996-04-23 1997-04-22 Servo tracking system utilizing phase-sensitive detection of reflectance variations

Country Status (5)

Country Link
US (2) US5767941A (en)
EP (1) EP0895605B1 (en)
CA (1) CA2252848C (en)
DE (1) DE69702899T2 (en)
WO (1) WO1997040405A1 (en)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020013573A1 (en) * 1995-10-27 2002-01-31 William B. Telfair Apparatus and method for tracking and compensating for eye movements
US5936229A (en) * 1996-04-02 1999-08-10 Trw Inc. Tracking means for distant ballistic missile targets comprising means for tracking largest radius of curvature
GB9618691D0 (en) * 1996-09-06 1996-10-16 Univ Aberdeen Scanning laser ophthalmoscope
US6145784A (en) * 1997-08-27 2000-11-14 Trw Inc. Shared aperture dichroic active tracker with background subtraction
WO1999055216A2 (en) * 1998-04-27 1999-11-04 Ming Lai Optical tracking device
AU2001259188A1 (en) * 2000-04-27 2001-11-07 Iridex Corporation Method and apparatus for real-time detection, control and recording of sub-clinical therapeutic laser lesions during ocular laser photocoagulation
US6325512B1 (en) 2000-10-31 2001-12-04 Carl Zeiss, Inc. Retinal tracking assisted optical coherence tomography
EP1357831A2 (en) 2001-02-09 2003-11-05 Sensomotoric Instruments GmbH Multidimensional eye tracking and position measurement system
US20030078567A1 (en) * 2001-04-27 2003-04-24 Giorgio Dorin Method and apparatus for laser ThermoProtectiveTreatment(TPT) with pre-programmed variable irradiance long exposures
US6726325B2 (en) * 2002-02-26 2004-04-27 Carl Zeiss Meditec, Inc. Tracking assisted optical coherence tomography
US7359563B1 (en) * 2004-04-05 2008-04-15 Louisiana Tech University Research Foundation Method to stabilize a moving image
US7799273B2 (en) 2004-05-06 2010-09-21 Smp Logic Systems Llc Manufacturing execution system for validation, quality and risk assessment and monitoring of pharmaceutical manufacturing processes
US7444197B2 (en) 2004-05-06 2008-10-28 Smp Logic Systems Llc Methods, systems, and software program for validation and monitoring of pharmaceutical manufacturing processes
US7365856B2 (en) 2005-01-21 2008-04-29 Carl Zeiss Meditec, Inc. Method of motion correction in optical coherence tomography imaging
US7805009B2 (en) 2005-04-06 2010-09-28 Carl Zeiss Meditec, Inc. Method and apparatus for measuring motion of a subject using a series of partial images from an imaging system
US7251196B1 (en) 2005-05-31 2007-07-31 The United States Of America As Represented By The Secretary Of The Navy Passive optical detection of underwater sound
DE102005047211A1 (en) * 2005-10-01 2007-04-05 Carl Zeiss Meditec Ag Mammal or human eye movement detecting system, has detection device generating independent detection signal using radiation from spot pattern, and control device evaluating signal for determining data about movement of eyes
DE102005058185A1 (en) * 2005-12-01 2007-06-14 Friedrich-Schiller-Universität Jena Object e.g. fundus of eye, region`s fluorescence and/or reflection spectra detecting method, involves forming difference signal from accumulated signals for spectral evaluation and presentation of fluorescence and/or reflection spectra
DE102005058184A1 (en) * 2005-12-01 2007-06-14 Friedrich-Schiller-Universität Jena Motion object e.g. eye-ground, fluorescence and/or reflection spectra detecting method for use during e.g. analysis of sample, involves accumulating local fluorescence and/or reflection signals and spectrometrically evaluating signals
US7758189B2 (en) * 2006-04-24 2010-07-20 Physical Sciences, Inc. Stabilized retinal imaging with adaptive optics
EP2012653B1 (en) * 2006-05-01 2012-12-12 Physical Sciences, Inc. Hybrid spectral domain optical coherence tomography line scanning laser ophthalmoscope
JP4822332B2 (en) * 2006-06-22 2011-11-24 株式会社トプコン Ophthalmic equipment
JP4822331B2 (en) * 2006-06-22 2011-11-24 株式会社トプコン Ophthalmic equipment
JP5038703B2 (en) * 2006-12-22 2012-10-03 株式会社トプコン Ophthalmic equipment
EP2178432A2 (en) * 2007-07-04 2010-04-28 i-Optics B.V. Confocal color ophthalmoscope
US8433117B2 (en) * 2008-11-21 2013-04-30 The United States Of America As Represented By The Secretary Of The Army Computer controlled system for laser energy delivery to the retina
WO2010083381A1 (en) * 2009-01-15 2010-07-22 Physical Sciences, Inc. Adaptive optics line scanning ophthalmoscope
WO2011091253A2 (en) * 2010-01-21 2011-07-28 Physical Sciences, Inc. Multi-functional adaptive optics retinal imaging
US9033510B2 (en) 2011-03-30 2015-05-19 Carl Zeiss Meditec, Inc. Systems and methods for efficiently obtaining measurements of the human eye using tracking
US8857988B2 (en) 2011-07-07 2014-10-14 Carl Zeiss Meditec, Inc. Data acquisition methods for reduced motion artifacts and applications in OCT angiography
JP5913999B2 (en) 2012-01-16 2016-05-11 キヤノン株式会社 Ophthalmic imaging apparatus and control method thereof
US9101294B2 (en) 2012-01-19 2015-08-11 Carl Zeiss Meditec, Inc. Systems and methods for enhanced accuracy in OCT imaging of the cornea
US9265458B2 (en) 2012-12-04 2016-02-23 Sync-Think, Inc. Application of smooth pursuit cognitive testing paradigms to clinical drug development
US9380976B2 (en) 2013-03-11 2016-07-05 Sync-Think, Inc. Optical neuroinformatics
US10943100B2 (en) 2017-01-19 2021-03-09 Mindmaze Holding Sa Systems, methods, devices and apparatuses for detecting facial expression
US11328533B1 (en) 2018-01-09 2022-05-10 Mindmaze Holding Sa System, method and apparatus for detecting facial expression for motion capture
DE102018204888A1 (en) * 2018-03-29 2019-10-02 Carl Zeiss Ag Device for determining a distance of a moving object
DE102020003944B3 (en) * 2020-06-26 2021-07-29 Rheinmetall Waffe Munition Gmbh Laser beam device with coupling of an illuminating laser beam into an effective laser beam

Family Cites Families (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4264152A (en) * 1979-02-26 1981-04-28 Sri International Visual stimulus deflector
US4443075A (en) * 1981-06-26 1984-04-17 Sri International Stabilized visual system
US4561436A (en) * 1983-10-28 1985-12-31 Cooper Lasersonics, Inc. Optical system for surgical ophthalmic laser instrument
US4964717A (en) * 1984-03-16 1990-10-23 The Trustees Of Columbia University In The City Of New York Ophthalmic image stabilization system
US4765730A (en) * 1985-09-17 1988-08-23 Eye Research Institute Of Retina Foundation Double scanning optical apparatus and method
US4764005A (en) * 1985-09-17 1988-08-16 Eye Research Institute Of Retina Foundation Double scanning optical apparatus
JPS6294153A (en) * 1985-10-18 1987-04-30 興和株式会社 Laser beam coagulation apparatus
JPS62266032A (en) * 1986-05-12 1987-11-18 興和株式会社 Eyeground examination apparatus
US4856891A (en) * 1987-02-17 1989-08-15 Eye Research Institute Of Retina Foundation Eye fundus tracker/stabilizer
US4931053A (en) * 1988-01-27 1990-06-05 L'esperance Medical Technologies, Inc. Method and apparatus for enhanced vascular or other growth
US4881808A (en) * 1988-02-10 1989-11-21 Intelligent Surgical Lasers Imaging system for surgical lasers
US4924507A (en) * 1988-02-11 1990-05-08 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Real-time optical multiple object recognition and tracking system and method
CH676419A5 (en) * 1988-10-06 1991-01-31 Lasag Ag
US5098426A (en) * 1989-02-06 1992-03-24 Phoenix Laser Systems, Inc. Method and apparatus for precision laser surgery
EP0392744B1 (en) * 1989-04-10 1995-03-01 Kowa Company Ltd. Ophthalmological measurement method and apparatus
JPH03128033A (en) * 1989-10-16 1991-05-31 Kowa Co Ophthalmological machinery
US5016643A (en) * 1990-05-02 1991-05-21 Board Of Regents, The University Of Texas System Vascular entoptoscope
US5094523A (en) * 1990-05-11 1992-03-10 Eye Research Institute Of Retina Foundation Bidirectional light steering apparatus
US5029220A (en) * 1990-07-31 1991-07-02 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Optical joint correlator for real-time image tracking and retinal surgery
US5106184A (en) * 1990-08-13 1992-04-21 Eye Research Institute Of Retina Foundation Retinal laser doppler apparatus having eye tracking system
JP3165144B2 (en) * 1990-10-26 2001-05-14 株式会社ニデック Binocular indirect mirror laser treatment system
JP3165186B2 (en) * 1991-07-31 2001-05-14 株式会社ニデック Light therapy equipment
JP3186799B2 (en) * 1991-09-17 2001-07-11 興和株式会社 3D shape measuring device
DE69232640T2 (en) * 1991-11-06 2003-02-06 Shui T Lai DEVICE FOR CORNEAL SURGERY
JP3369623B2 (en) * 1993-03-16 2003-01-20 興和株式会社 Laser scanning ophthalmic imaging device
US5360424A (en) * 1993-06-04 1994-11-01 Summit Technology, Inc. Tracking system for laser surgery
US5778016A (en) * 1994-04-01 1998-07-07 Imra America, Inc. Scanning temporal ultrafast delay methods and apparatuses therefor
US5980513A (en) * 1994-04-25 1999-11-09 Autonomous Technologies Corp. Laser beam delivery and eye tracking system
US5480396A (en) * 1994-12-09 1996-01-02 Simon; Gabriel Laser beam ophthalmological surgery method and apparatus
US5782822A (en) * 1995-10-27 1998-07-21 Ir Vision, Inc. Method and apparatus for removing corneal tissue with infrared laser radiation

Also Published As

Publication number Publication date
WO1997040405A1 (en) 1997-10-30
EP0895605A1 (en) 1999-02-10
CA2252848C (en) 2002-09-03
US5767941A (en) 1998-06-16
DE69702899T2 (en) 2001-03-22
DE69702899D1 (en) 2000-09-28
US5943115A (en) 1999-08-24
EP0895605B1 (en) 2000-08-23

Similar Documents

Publication Publication Date Title
CA2252848A1 (en) Servo tracking system utilizing phase-sensitive detection of reflectance variations
WO1996017258A3 (en) Optical position sensing system
EP1876415B1 (en) A surveying instrument and method of controlling a surveying instrument
EP0238615B1 (en) Method of navigating an automated guided vehicle
AU4292799A (en) Device for determining the contour of a road surface
EP1480006A3 (en) Laser measurement apparatus
EP0789223A4 (en) Movement detector
CA2250435A1 (en) Method for the contact-free measurement of the distance of an object according to the principle of laser triangulation
EP0797076A3 (en) Surveying system
BR9510406A (en) Methods and apparatus for automating the adjustment of rear-view mirrors
MXPA02001544A (en) Method and device for detecting the position of a vehicle in a given area.
WO2005022076A3 (en) Part inspection apparatus
EP0357905A3 (en) Method of measuring a profile of an object and an apparatus for carrying out the method
US4736247A (en) Range and range rate system
AU3599499A (en) Method for determining the spatial and rotational positions of an object
RU2137149C1 (en) Gear for target detection
EP0773427A4 (en) Apparatus for reference laser level setting
JPH04241833A (en) Device for optical measurement of human cornea
JPS57172266A (en) Distance measuring device
CN116819565A (en) Navigation obstacle avoidance device, mobile obstacle avoidance method, mobile robot and storage medium
JPS5757004A (en) Reflective antenna
JPS6463919A (en) Light transmitter
JPH0259474U (en)
Graham et al. Range and range rate system
JPH02107989A (en) Position recognizing apparatus for moving body

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20140422